Bolt and nut combination having a positioning device

Abstract

A bolt and nut combination includes a bolt including a shank formed with a bolt head and having a threaded portion; at least one groove formed longitudinally on the threaded portion, each groove being at a first angle with respect to an axis of the threaded portion and the first angle being not equal to 90-degree; a nut including a threaded hole configured to secure to the threaded portion; at least one trough formed longitudinally on the threaded hole, each trough being at a second angle with respect to an axis of the threaded portion and the second angle being not equal to 90-degree; and at least one elongated, resilient positioning device, each positioning device including a main portion and a positioning portion. In one embodiment, the main portion is disposes in the trough and the positioning portion is disposed in the groove.

What is claimed is: 
     
         1 . A bolt and nut combination comprising:
 a bolt including a bolt head and a shank formed with the bolt head and having a threaded portion;   at least one groove formed longitudinally on a surface of the threaded portion, each of the at least one groove being at a first angle with respect to an axis of the threaded portion and the first angle being not equal to 90-degree;   a nut including a threaded hole configured to secure to the threaded portion;   at least one trough formed longitudinally on the threaded hole, each of the at least one trough being at a second angle with respect to an axis of the threaded portion and the second angle being not equal to  90 -degree; and   at least one positioning device each being elongated, resilient, each of the at least one positioning device including a main portion and a positioning portion;   wherein the main and positioning portions are configured to resiliently draw near each other or resiliently draw away each other; and   wherein the main portion is configured to dispose in the trough and the positioning portion is configured to dispose in the groove, or the main portion is configured to dispose in the groove and the positioning portion is configured to dispose in the trough.   
     
     
         2 . The bolt and nut combination of  claim 1 , wherein at least one trough is formed longitudinally on the threaded hole; wherein at least one groove is formed longitudinally on the surface of the threaded portion; and wherein the main portion is configured to dispose in the groove and the positioning portion is configured to dispose in the trough. 
     
     
         3 . The bolt and nut combination of  claim 1 , wherein at least one trough is formed longitudinally on the threaded hole; wherein at least one groove is formed longitudinally on the surface of the threaded portion; and wherein the main portion is configured to dispose in the trough and the positioning portion is configured to dispose in the groove. 
     
     
         4 . The bolt and nut combination of  claim 1 , wherein a plurality of equally spaced grooves formed longitudinally on the surface of the threaded portion; and a plurality of troughs formed longitudinally on the threaded hole; wherein the number of the at least one positioning device is at least two; wherein the main portion of one positioning device is disposed in the groove of the bolt, and the positioning portion of one positioning device is disposed in the trough of the nut; and wherein the main portion of the other positioning device is disposed in the trough of the nut, and the positioning portion of the other positioning device is disposed in the groove of the bolt. 
     
     
         5 . The bolt and nut combination of  claim 1 , wherein the main portion of the positioning device includes an insert portion formed at an end; wherein the groove includes a hole proximate an end of the threaded portion; and wherein the insert portion is inserted into the hole. 
     
     
         6 . The bolt and nut combination of  claim 2 , wherein the main portion of the positioning device includes an insert portion formed at an end; wherein the groove includes a hole proximate an end of the threaded portion; and wherein the insert portion is inserted into the hole. 
     
     
         7 . The bolt and nut combination of  claim 4 , wherein the main portion of the positioning device includes an insert portion formed at an end; wherein the groove includes a hole proximate an end of the threaded portion; and wherein the insert portion is inserted into the hole. 
     
     
         8 . The bolt and nut combination of  claim 1 , wherein the main portion of the positioning device includes an insert portion formed at an end; wherein the trough includes a hole proximate one end of the nut; and wherein the insert portion is inserted into the hole. 
     
     
         9 . The bolt and nut combination of  claim 3 , wherein the main portion of the positioning device includes an insert portion formed at an end; wherein the trough includes a hole proximate one end of the nut; and wherein the insert portion is inserted into the hole. 
     
     
         10 . The bolt and nut combination of  claim 4 , wherein the main portion of the positioning device includes an insert portion formed at an end; wherein the trough includes a hole proximate one end of the nut; and wherein the insert portion is inserted into the hole. 
     
     
         11 . The bolt and nut combination of  claim 1 , wherein the main portion is parallel to the positioning portion; and wherein one end of the main portion is joined one end of the positioning portion. 
     
     
         12 . The bolt and nut combination of  claim 1 , wherein the groove is parallel to an axis of the threaded portion of the bolt; and wherein the trough is parallel to an axis of the threaded hole of the nut. 
     
     
         13 . The bolt and nut combination of  claim 1 , wherein the positioning device is made of resilient metal.